Abstract

The technique of coherent anti-Stokes Raman spectroscopy can be used to obtain spectra in or near the reaction zone of combustion systems with spatial resolution on the order of 0.1 mm and time resolution on the order of 10 nsec. The latter is achieved by recording the entire spectrum generated during a single laser pulse by a broadband Stokes beam, simultaneously, on a vidicon, whereas the former is achieved by a simplified variant of the crossed-beam phase-matching technique taking advantage of the radiation intensity distribution from a pump laser using an unstable resonator structure.

© 1979 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. A. C. Eckbreth, United Technologies Research Center Report #78-41 and paper presented at the XVIIth International Symposium on Combustion, Leeds, England, August 20–25, 1978.
  2. F. Moya, S. A. J. Druet, J. P. E. Taran, Opt. Commun. 13, 169 (1975).
    [CrossRef]
  3. W. B. Roh, P. W. Schreiber, J. P. E. Taran, Appl. Phys. Lett. 29, 174 (1976).
    [CrossRef]
  4. F. Moya, S. A. J. Druet, J. P. E. Taran, Lecture Notes in Physics, Vol. 43, 1975, 2nd Laser Spectroscopy Conference, Magene, France, 1975.
  5. A. C. Eckbreth, Appl. Phys. Lett. 32, 421 (1978).
    [CrossRef]
  6. A. C. Eckbreth, R. J. Hall, J. A. Shirley, Paper 79-0083, 17th Aerospace Sciences Meeting, New Orleans, La., Jan.15–17,1979.
  7. L. C. Davis, K. A. Marko, L. Rimai (manuscript in preparation).
  8. G. Herzberg, Molecular Spectra and Molecular Structure, I. Spectra of Diatomic Molecules, 2nd ed. (Van Nostrand, Princeton, N.J., 1950).

1978

A. C. Eckbreth, Appl. Phys. Lett. 32, 421 (1978).
[CrossRef]

1976

W. B. Roh, P. W. Schreiber, J. P. E. Taran, Appl. Phys. Lett. 29, 174 (1976).
[CrossRef]

1975

F. Moya, S. A. J. Druet, J. P. E. Taran, Opt. Commun. 13, 169 (1975).
[CrossRef]

Davis, L. C.

L. C. Davis, K. A. Marko, L. Rimai (manuscript in preparation).

Druet, S. A. J.

F. Moya, S. A. J. Druet, J. P. E. Taran, Opt. Commun. 13, 169 (1975).
[CrossRef]

F. Moya, S. A. J. Druet, J. P. E. Taran, Lecture Notes in Physics, Vol. 43, 1975, 2nd Laser Spectroscopy Conference, Magene, France, 1975.

Eckbreth, A. C.

A. C. Eckbreth, Appl. Phys. Lett. 32, 421 (1978).
[CrossRef]

A. C. Eckbreth, United Technologies Research Center Report #78-41 and paper presented at the XVIIth International Symposium on Combustion, Leeds, England, August 20–25, 1978.

A. C. Eckbreth, R. J. Hall, J. A. Shirley, Paper 79-0083, 17th Aerospace Sciences Meeting, New Orleans, La., Jan.15–17,1979.

Hall, R. J.

A. C. Eckbreth, R. J. Hall, J. A. Shirley, Paper 79-0083, 17th Aerospace Sciences Meeting, New Orleans, La., Jan.15–17,1979.

Herzberg, G.

G. Herzberg, Molecular Spectra and Molecular Structure, I. Spectra of Diatomic Molecules, 2nd ed. (Van Nostrand, Princeton, N.J., 1950).

Marko, K. A.

L. C. Davis, K. A. Marko, L. Rimai (manuscript in preparation).

Moya, F.

F. Moya, S. A. J. Druet, J. P. E. Taran, Opt. Commun. 13, 169 (1975).
[CrossRef]

F. Moya, S. A. J. Druet, J. P. E. Taran, Lecture Notes in Physics, Vol. 43, 1975, 2nd Laser Spectroscopy Conference, Magene, France, 1975.

Rimai, L.

L. C. Davis, K. A. Marko, L. Rimai (manuscript in preparation).

Roh, W. B.

W. B. Roh, P. W. Schreiber, J. P. E. Taran, Appl. Phys. Lett. 29, 174 (1976).
[CrossRef]

Schreiber, P. W.

W. B. Roh, P. W. Schreiber, J. P. E. Taran, Appl. Phys. Lett. 29, 174 (1976).
[CrossRef]

Shirley, J. A.

A. C. Eckbreth, R. J. Hall, J. A. Shirley, Paper 79-0083, 17th Aerospace Sciences Meeting, New Orleans, La., Jan.15–17,1979.

Taran, J. P. E.

W. B. Roh, P. W. Schreiber, J. P. E. Taran, Appl. Phys. Lett. 29, 174 (1976).
[CrossRef]

F. Moya, S. A. J. Druet, J. P. E. Taran, Opt. Commun. 13, 169 (1975).
[CrossRef]

F. Moya, S. A. J. Druet, J. P. E. Taran, Lecture Notes in Physics, Vol. 43, 1975, 2nd Laser Spectroscopy Conference, Magene, France, 1975.

Appl. Phys. Lett.

W. B. Roh, P. W. Schreiber, J. P. E. Taran, Appl. Phys. Lett. 29, 174 (1976).
[CrossRef]

A. C. Eckbreth, Appl. Phys. Lett. 32, 421 (1978).
[CrossRef]

Opt. Commun.

F. Moya, S. A. J. Druet, J. P. E. Taran, Opt. Commun. 13, 169 (1975).
[CrossRef]

Other

A. C. Eckbreth, United Technologies Research Center Report #78-41 and paper presented at the XVIIth International Symposium on Combustion, Leeds, England, August 20–25, 1978.

F. Moya, S. A. J. Druet, J. P. E. Taran, Lecture Notes in Physics, Vol. 43, 1975, 2nd Laser Spectroscopy Conference, Magene, France, 1975.

A. C. Eckbreth, R. J. Hall, J. A. Shirley, Paper 79-0083, 17th Aerospace Sciences Meeting, New Orleans, La., Jan.15–17,1979.

L. C. Davis, K. A. Marko, L. Rimai (manuscript in preparation).

G. Herzberg, Molecular Spectra and Molecular Structure, I. Spectra of Diatomic Molecules, 2nd ed. (Van Nostrand, Princeton, N.J., 1950).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (3)

Fig. 1
Fig. 1

Schematic diagram of the experimental setup. M1, mirror. M2 can be rotated to direct the radiation onto ground-glass, G.G., for observation or photography. L1, lens; D1, dichroic; S.F., spatial filter to isolate meridional index-matched CARS. Insert A: Beam configuration near the sampling point. k1 and k2, pump wavevectors; ks, Stokes wavevector; ka wavevector of the generated CARS wave.

Fig. 2
Fig. 2

A, Unfiltered radiation as detected in a photographic plate. B, Same radiation observed through a high-pass filter system that cuts off the pump and Stokes wavelengths. Top spot, near-collinear CARS. Bottom spot, meridional phase-matched CARS. Insert I: Wave directions as represented in the plane normal to the axis C of the pump beam. Outer circle, locus of the pump; inner circl locus of the CARS waves corresponding to the Stokes waves ks, ka, meridional phase-matched CARS.

Fig. 3
Fig. 3

Actual unprocessed data readout from optical multichannel analyzer. A, Single-pulse nitrogen spectrum from above the luminous flame front of a propane torch, meridional phase-matching condition. B, 12-pulse nitrogen spectrum from same spot. These traces both clearly reveal the 2 ← 1 vibrational hot band. C, Single-pulse collinear phase-matched spectrum, other conditions same as above.

Metrics